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        ASAR_Dop_Cen_ADSR
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<table class="header"><tr class="header"><td class="header">&nbsp;Supported ENVISAT Products</td><td class="header"
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<h2>Doppler Centroid Parameters</h2>

<p><font size="+1">&nbsp;&nbsp;Fields of ENVISAT <B>ASAR_Dop_Cen_ADSR</B> Records</font></p>
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    <tr>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Index</font></td>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Identifier</font></td>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Field Type</font></td>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Field Length</font></td>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Description</font></td>
        <td BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><font size="+1"> Units</font></td>
    </tr>
    <tr>
        <td>0</td>
        <td><code>"zero_doppler_time"</code></td>
        <td><a href="../../lang_types.html#MJD">MJD</a></td>
        <td>1</td>
        <td>Zero Doppler azimuth time at which estimate applies</td>
        <td>MJD</td>
    </tr>
    <tr>
        <td>1</td>
        <td><code>"attach_flag"</code></td>
        <td><a href="../../lang_types.html#UChar">UChar</a></td>
        <td>1</td>
        <td>Attachment Flag (always set to zero for this ADSR)</td>
        <td>flag</td>
    </tr>
    <tr>
        <td>2</td>
        <td><code>"slant_range_time"</code></td>
        <td><a href="../../lang_types.html#Float">Float</a></td>
        <td>1</td>
        <td>2-way slant range time origin (t0)</td>
        <td>ns</td>
    </tr>
    <tr>
        <td>3</td>
        <td><code>"dop_coef"</code></td>
        <td><a href="../../lang_types.html#Float">Float</a></td>
        <td>5</td>
        <td>Doppler centroid coefficients as a function of slant range time: D0, D1, D2, D3, and D4. where Doppler
            Centroid = D0 + D1(tSR-t0) + D2(tSR-t0)2 + D3(tSR-t0)3 + D4(tSR-t0)4</td>
        <td>HzHz/sHz/s2Hz/s3Hz/s4</td>
    </tr>
    <tr>
        <td>4</td>
        <td><code>"dop_conf"</code></td>
        <td><a href="../../lang_types.html#Float">Float</a></td>
        <td>1</td>
        <td>Doppler Centroid Confidence Measure. Value between 0 and 1, 0 = poorest confidence, 1= highest confidence.
            If multiple Doppler Centroid estimates were performed, this value is the lowest confidence value
            attained.</td>
        <td>-</td>
    </tr>
    <tr>
        <td>5</td>
        <td><code>"dop_thresh_flag"</code></td>
        <td><a href="../../lang_types.html#UChar">UChar</a></td>
        <td>1</td>
        <td>Doppler Confidence Below Threshold Flag. 0 = confidence above threshold, Doppler Centroid calculated from
            data. 1 = confidence below threshold, Doppler Centroid calculated from orbit.</td>
        <td>flag</td>
    </tr>
    <tr>
        <td>6</td>
        <td><code>"spare_1"</code></td>
        <td><a href="../../lang_types.html#Spare">Spare</a></td>
        <td>1</td>
        <td>Spare</td>
        <td>-</td>
    </tr>
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